app/bbdev: check statistics failure

[ upstream commit ce1b62899167f6e2c49d8496afa43a9162167c6b ]

Add check for return value from get_bbdev_queue_stats.

Coverity issue: 383155
Fixes: c256043 ("app/bbdev: add explicit check for counters")

Signed-off-by: Hernan Vargas <hernan.vargas@intel.com>
Reviewed-by: Maxime Coquelin <maxime.coquelin@redhat.com>

app/test-bbdev/test_bbdev_perf.c

@@ -4703,7 +4703,7 @@ offload_cost_test(struct active_device *ad,
 	printf("Set RTE_BBDEV_OFFLOAD_COST to 'y' to turn the test on.\n");
 	return TEST_SKIPPED;
 #else
-	int iter;
+	int iter, ret;
 	uint16_t burst_sz = op_params->burst_sz;
 	const uint16_t num_to_process = op_params->num_to_process;
 	const enum rte_bbdev_op_type op_type = test_vector.op_type;
@@ -4794,7 +4794,10 @@ offload_cost_test(struct active_device *ad,
 			rte_get_tsc_hz());
 
 	struct rte_bbdev_stats stats = {0};
-	get_bbdev_queue_stats(ad->dev_id, queue_id, &stats);
+	ret = get_bbdev_queue_stats(ad->dev_id, queue_id, &stats);
+	TEST_ASSERT_SUCCESS(ret,
+			"Failed to get stats for queue (%u) of device (%u)",
+			queue_id, ad->dev_id);
 	if (op_type != RTE_BBDEV_OP_LDPC_DEC) {
 		TEST_ASSERT_SUCCESS(stats.enqueued_count != num_to_process,
 				"Mismatch in enqueue count %10"PRIu64" %d",